We deal with a random graph model evolving in discrete time steps by duplicating and deleting the edges of randomly chosen vertices. We prove the existence of an a.s. asymptotic degree distribution,â€¦ (More)

In a one-parameter model for evolution of random trees, which also includes the BarabÃ¡siâ€“Albert random tree [1], almost sure behavior and the limiting distribution of the degree of a vertex in aâ€¦ (More)

We discuss the solvability of backward stochastic differential equations (BSDEs) with superquadratic generators. We first prove that given a superquadratic generator, there exists a bounded terminalâ€¦ (More)

A discrete model, inspired by publication activity, is introduced. It includes an increasing number of objects equipped with positive weights, which also increase with time. The random evolution ofâ€¦ (More)